Zobrazeno 1 - 10
of 3 896
pro vyhledávání: '"Ritchie D"'
Autor:
Norimoto, S., See, P., Schoinas, N., Rungger, I., Boykin II, T. O., Stewart Jr, M. D., Griffiths, J. P., Chen, C., Ritchie, D. A., Kataoka, M.
Increasing electric current from a single-electron source is a main challenge in an effort to establish the standard of the ampere defined by the fixed value of the elementary charge $e$ and operation frequency $f$. While the current scales with $f$,
Externí odkaz:
http://arxiv.org/abs/2407.05926
Autor:
Pyurbeeva, E., Blumenthal, M. D., Mol, J. A., Howe, H., Beere, H. E., Mitchell, T., Ritchie, D. A., Pepper, M.
We present the first detailed study of the effect of a strong magnetic field on single-electron pumping in a device utilising a finger-gate split-gate configuration. In the quantum Hall regime, we demonstrate electron pumping from Landau levels in th
Externí odkaz:
http://arxiv.org/abs/2406.13615
Autor:
Norimoto, S., Saxena, R., See, P., Nasir, A., Griffiths, J. P., Chen, C., Ritchie, D. A., Kataoka, M.
We demonstrate a method to generate photons by injecting hot electrons into a {\it pn} junction within a \ce{GaAs/AlGaAs} heterostructure. Hot electrons are generated by biasing across a mesoscopic potential in {\it n}-type region and travel toward {
Externí odkaz:
http://arxiv.org/abs/2406.04556
Autor:
Schoinas, N., Rath, Y., Norimoto, S., Xie, W., See, P., Griffiths, J. P., Chen, C., Ritchie, D. A., Kataoka, M., Rossi, A., Rungger, I.
We present an efficient machine learning based automated framework for the fast tuning of single-electron pump devices into current quantization regimes. It uses a sparse measurement approach based on an iterative active learning algorithm to take ta
Externí odkaz:
http://arxiv.org/abs/2405.20946
Autor:
Barik, Bikash C., Chakraborti, Himadri, Jain, Aditya K., Pal, Buddhadeb, Beere, H. E., Ritchie, D. A., Gupta, K. Das
A system in equilibrium keeps ``exploring" nearby states in the phase space and consequently, fluctuations can contain information, that the mean value does not. However, such measurements involve a fairly complex interplay of effects arising in the
Externí odkaz:
http://arxiv.org/abs/2402.13363
Autor:
Laccotripes, P., Müller, T., Stevenson, R. M., Skiba-Szymanska, J., Ritchie, D. A., Shields, A. J.
The ever-evolving demands for computational power and for a securely connected world dictate the development of quantum networks where entanglement is distributed between connected parties. Solid-state quantum emitters in the telecom C-band are a pro
Externí odkaz:
http://arxiv.org/abs/2310.16930
Autor:
Rendell, M. J., Liles, S. D., Bladwell, S., Srinivasan, A., Klochan, O., Farrer, I., Ritchie, D. A., Sushkov, O. P., Hamilton, A. R.
Measurements of the Fermi surface are a fundamental technique for determining the electrical and magnetic properties of solids. In 2D systems, the area and diameter of the Fermi surface is typically measured using Shubnikov-de Haas oscillations and c
Externí odkaz:
http://arxiv.org/abs/2310.04005
Autor:
Whittaker, C. E., Isoniemi, T., Lovett, S., Walker, P. M., Kolodny, S., Kozin, V., Iorsh, I. V., Farrer, I., Ritchie, D. A., Skolnick, M. S., Krizhanovskii, D. N.
Publikováno v:
Appl. Phys. Lett. 119, 181101 (2021)
We report the observation of band gaps for low loss exciton-polaritons propagating outside the light cone in GaAs-based planar waveguides patterned into two-dimensional photonic crystals. By etching square lattice arrays of shallow holes into the upp
Externí odkaz:
http://arxiv.org/abs/2308.15185
Autor:
Rendell, M. J., Liles, S. D., Srinivasan, A., Klochan, O., Farrer, I., Ritchie, D. A., Hamilton, A. R.
In 2D systems with a spin-orbit interaction, magnetic focussing can be used to create a spatial separation of particles with different spin. Here we measure hole magnetic focussing for two different magnitudes of the Rashba spin-orbit interaction. We
Externí odkaz:
http://arxiv.org/abs/2210.03383
Autor:
Fletcher, J. D., Park, W., Ryu, S., See, P., Griffiths, J. P., Jones, G. A. C., Farrer, I., Ritchie, D. A., Sim, H. -S., Kataoka, M.
Precise control over interactions between ballistic electrons will enable us to exploit Coulomb interactions in novel ways, to develop high-speed sensing, to reach a non-linear regime in electron quantum optics and to realise schemes for fundamental
Externí odkaz:
http://arxiv.org/abs/2210.03473